Conveyor system having a conveyor belt

Abstract

The invention relates to a conveyor system, comprising a conveyor belt, which has a carrying-side cover plate ( 3 ) and a running-side cover plate ( 4 ), and comprising drums, supporting rollers, and supporting frames, wherein the conveyor system forms a material-conveying upper run having a feed point for the conveying material and a mostly material-free lower run. For a further sufficient flame-inhibiting effect that does not negatively affect the further physical properties of the conveyor belt and that does not pose a health hazard to persons, animals, or the environment, the carrying-side (carrying side) cover plate ( 3 ) and/or the running-side (running side) cover plate ( 4 ) contains at least one flameproofing agent, wherein the flameproofing agent is free of bromium and bromium compounds.

What is claimed is: 
     
       1. A conveyor system comprising:
 a conveyor belt comprising a first outer sheet disposed on a loadbearing side and a second outer sheet disposed on a drive side; 
 a plurality of drums; 
 a plurality of loadbearing rollers; and, 
 a plurality of supportive structures; 
 wherein the conveyor system forms a material-conveying upper web with an application site for material to be conveyed; 
 wherein the conveyor system forms a substantially material-free lower web; 
 wherein one or more of the first outer sheet on the loadbearing side, or the second outer sheet on the drive side, comprises at least a first flame retardant and a second flame retardant; 
 wherein the first one flame retardant is zinc hydroxystannate, zinc hydroxystannate, or a combination of zinc hydroxystannate and zinc stannate; 
 wherein the second flame retardant comprises antimony, an antimony compound, or a combination of antimony and an antimony compound, provided the second flame retardant is an antimony-trioxide-free flame retardant; 
 and, 
 wherein the first flame retardant and the second flame retardant are free from bromine and bromine compounds. 
 
     
     
       2. The conveyor system as claimed in  claim 1 , wherein the second flame retardant is incorporated in an amount of from 0 to 5 phr.